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学者姓名：张跃飞
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摘要 ：
本发明公开一种大范围高精度的实时表面形貌测量方法及系统，属于表面形貌测量领域。在宏观表面扫描范围内控制样品按照宏观表面扫描步长进行水平面移动，待移动至微观局部扫描范围时，在微观局部扫描范围内控制样品按照微观局部扫描步长进行水平面移动，并在水平面移动过程中随时调整样品的垂向位移，使得反射光斑一直位于位置探测器的中心，根据记录的垂向位移调整值以及对应的扫描位置，输出当前扫描样品的表面形貌成像，并最终形成宏观表面的表面形貌成像和微观局部的表面形貌成像，实现了跨尺度范围的表面形貌成像与微观局部高精度成像。
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| GB/T 7714 | 赵敏 , 吕俊霞 , 张跃飞 et al. 一种大范围高精度的实时表面形貌测量方法及系统 : CN202310285024.5[P]. | 2023-03-22 . |
| MLA | 赵敏 et al. "一种大范围高精度的实时表面形貌测量方法及系统" : CN202310285024.5. | 2023-03-22 . |
| APA | 赵敏 , 吕俊霞 , 张跃飞 , 佟翔宇 , 李睿 . 一种大范围高精度的实时表面形貌测量方法及系统 : CN202310285024.5. | 2023-03-22 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The particle morphology determined by the sintering process is the director factor affecting the electrochemical performance of Ni-rich NMC cathode materials. To prepare the ideal NMC particles, it is of great significance to understand the morphological changes during sintering process. In this work, the morphology evolution of LiNi0.8Mn0.1Co0.1O2 (NMC811) synthesis at temperature ranging from 300-1080 degrees C were observed by in situ SEM. The uniform mixture of spherical Ni0.8Mn0.1Co0.1(OH)(2) precursor and lithium sources (LiOH) was employed by high temperature solid-state process inside the SEM, which enables us to observe morphology changes in real time. The results show that synthetic reaction of LiNi0.8Mn0.1Co0.1O2 usually includes three processes: the raw materials' dehydration, oxidation, and combination, accompanied by a significant reduction in particle size, which is important reference to control the synthesis temperature. As heating temperature rise, the morphology of mixture also changed from flake to brick-shaped. However, Ni nanoparticle formation is apparent at higher temperature similar to 1000 degrees C, suggesting a structural transformation from a layered to a rock-salt-like structure. Combining the insitu observed changes in size and morphology, and with the premise of ensuring the morphology change from flakes to bricks, reducing the sintering temperature as much as possible to prevent excessive reduction in particle size and layered to a rock-salt structure transformation is recommended for prepare ideal NMC particles. (C) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
关键词 ：
High temperature imaging High temperature imaging In situ SEM In situ SEM Lithium-ion battery Lithium-ion battery NMC cathode NMC cathode Particle morphology Particle morphology
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| GB/T 7714 | Tang, Liang , Cheng, Xiaopeng , Wu, Rui et al. Monitoring the morphology evolution of LiNi0.8Mn0.1Co0.1O2 during high-temperature solid state synthesis via in situ SEM [J]. | JOURNAL OF ENERGY CHEMISTRY , 2022 , 66 : 9-15 . |
| MLA | Tang, Liang et al. "Monitoring the morphology evolution of LiNi0.8Mn0.1Co0.1O2 during high-temperature solid state synthesis via in situ SEM" . | JOURNAL OF ENERGY CHEMISTRY 66 (2022) : 9-15 . |
| APA | Tang, Liang , Cheng, Xiaopeng , Wu, Rui , Cao, Tianci , Lu, Junxia , Zhang, Yuefei et al. Monitoring the morphology evolution of LiNi0.8Mn0.1Co0.1O2 during high-temperature solid state synthesis via in situ SEM . | JOURNAL OF ENERGY CHEMISTRY , 2022 , 66 , 9-15 . |
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摘要 ：
Electrochemical actuators (EAs) with capabilities of triggering large deformation are attracting great interests because of their low stimulation voltage and high durability. However, porous electrode structures (PESs) with either a large unexpected strain or small-size inserted ions lead to small actuation strain and low energy transduction efficiency. To address this problem, an ideal electrode material, namely, pyrolytic graphite (PG), with an anisotropic densely stacked electrode structure (ASES), was proposed, and the optimal insertion ion, namely, AlCl4- with a large radius, was selected. Simulations show that an ASES presents an increased actuation strain and effectively eliminates unexpected strain. In addition, the insertion of AlCl4- into the graphite layers can lead to a directionally large volume expansion (>230%) due to the low energy barrier and large ionic radius. Experimental results reveal that the PG can expand/contract repeatedly with a high linear strain of approximate to 48% under a zero stress and approximate to 32% under a load of 2.5 MPa. EAs based on PG and AlCl4- achieve excellent actuation efficiency with an energy density of 105.89 J cm(-3), power density of 0.35 W cm(-3) and a high electromechanical transduction efficiency of up to 14.30%. This design method provides a significant way to develop high-performance EAs. (c) 2022 Elsevier Ltd. All rights reserved.
关键词 ：
Large anionic groups Large anionic groups Electrochemical actuators Electrochemical actuators Electromechanical transduction efficiency Electromechanical transduction efficiency Anisotropic expansion Anisotropic expansion
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| GB/T 7714 | Li, Na , Wang, Peng , Shi, Huifeng et al. An ultrahigh efficiency electrochemical actuator [J]. | EXTREME MECHANICS LETTERS , 2022 , 53 . |
| MLA | Li, Na et al. "An ultrahigh efficiency electrochemical actuator" . | EXTREME MECHANICS LETTERS 53 (2022) . |
| APA | Li, Na , Wang, Peng , Shi, Huifeng , Chen, Ya , Yang, Le , Zhang, Yuefei et al. An ultrahigh efficiency electrochemical actuator . | EXTREME MECHANICS LETTERS , 2022 , 53 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Although the rapid development of electrical energy storage devices has slowed down environmental pollution, their large-scale application has posed huge challenges to battery-related mineral resources; thus, extending the lifespan of high-voltage lithium cobalt oxide (LCO) is of great importance. Surface oxide coating is considered as the most common low-cost modification method for addressing unstable cycling performance. However, studies have shown that the oxide layer would further react with an electrolyte, while the investigation on the corresponding component evolution is lacking. Herein, a typical example utilizing the above reaction to realize surface reconstruction is presented. Applying atomic layer deposition (ALD), originally, an ultrathin Al2O3 layer is coated on the LCO surface; however, this coating layer has undergone reconstruction after reacting with electrolyte decomposition products during the cycling. Compared with simple coating, the in situ formed Li3AlF6 layer has a tighter binding to the LCO surface while possessing good Li+ conductivity and electrochemical stability. In addition, the unique properties of the ALD technology allow us to achieve ultrathin (1 nm) and conformal coating, which is beneficial for electronic conductivity and cycling stability. Furthermore, the surface phase transition layer stripping failure mechanism has first been revealed to explain the loss of Co and O, while the reconstructed Li3AlF6 effectively suppresses the surface stripping. Thus, excellent high-voltage performance has been realized (an 89% capacity retention after 1000 cycles at 4.5 V and an 88% capacity retention after 200 cycles at 4.6 V). This work casts a new understanding on the surface reconstruction of the oxide coating layer, which is also significant for other electrode materials' modification.
关键词 ：
atomic layer deposition atomic layer deposition Li3AlF6 Li3AlF6 surface reconstruction surface reconstruction surface stripping surface stripping high-voltage LCO high-voltage LCO
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| GB/T 7714 | Wu, Rui , Cao, Tianci , Liu, Huan et al. Ultralong Lifespan for High-Voltage LiCoO2 Enabled by In Situ Reconstruction of an Atomic Layer Deposition Coating Layer [J]. | ACS APPLIED MATERIALS & INTERFACES , 2022 , 14 (22) : 25524-25533 . |
| MLA | Wu, Rui et al. "Ultralong Lifespan for High-Voltage LiCoO2 Enabled by In Situ Reconstruction of an Atomic Layer Deposition Coating Layer" . | ACS APPLIED MATERIALS & INTERFACES 14 . 22 (2022) : 25524-25533 . |
| APA | Wu, Rui , Cao, Tianci , Liu, Huan , Cheng, Xiaopeng , Liu, Xianqiang , Zhang, Yuefei . Ultralong Lifespan for High-Voltage LiCoO2 Enabled by In Situ Reconstruction of an Atomic Layer Deposition Coating Layer . | ACS APPLIED MATERIALS & INTERFACES , 2022 , 14 (22) , 25524-25533 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本发明提供了一种扫描电镜中原位观察锂枝晶生长的方法，涉及能源材料原位电子显微学表征技术领域。本发明通过在扫描电镜中组装原位全固态电池，在充放电过程中获取锂枝晶生长的扫描电镜图像，实时检测固态锂电池中锂枝晶的生长状态，包括其形貌、化学成分组成、生长机制等。
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| GB/T 7714 | 程晓鹏 , 曹天赐 , 张跃飞 et al. 一种扫描电镜中原位观察锂枝晶生长的方法 : CN202211576578.2[P]. | 2022-12-09 . |
| MLA | 程晓鹏 et al. "一种扫描电镜中原位观察锂枝晶生长的方法" : CN202211576578.2. | 2022-12-09 . |
| APA | 程晓鹏 , 曹天赐 , 张跃飞 , 刘显强 . 一种扫描电镜中原位观察锂枝晶生长的方法 : CN202211576578.2. | 2022-12-09 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本发明公开一种扫描电镜中固态电池界面观察的实验装置，所述实验装置包括：压力可调的固态电池固定装置，所述固态电池固定装置包括上夹板和下夹板；所述上夹板和所述下夹板的第一侧通过螺栓固定，所述上夹板和所述下夹板的第二侧通过丝杠传动装置固定；用于实验的固态电池设置在所述上夹板和所述下夹板之间；所述丝杠传动装置用于调节所述上夹板和所述下夹板施加给所述固态电池的压力。本发明通过丝杠传动装置实现精准稳定的调节上夹板和下夹板施加给固态电池的压力，满足了变压力作用下的固态电池的充放电循环原位电化学反应的监测。
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| GB/T 7714 | 程晓鹏 , 张跃飞 , 曹天赐 . 一种扫描电镜中固态电池界面观察的实验装置 : CN202211576601.8[P]. | 2022-12-09 . |
| MLA | 程晓鹏 et al. "一种扫描电镜中固态电池界面观察的实验装置" : CN202211576601.8. | 2022-12-09 . |
| APA | 程晓鹏 , 张跃飞 , 曹天赐 . 一种扫描电镜中固态电池界面观察的实验装置 : CN202211576601.8. | 2022-12-09 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
本文选用镍基模型单晶高温合金Ni-Al-Ru作为研究对象,综合利用SEM原位拉伸技术和EBSD技术,对样品拉伸轴偏离角度可能造成的室温拉伸性能的误差影响进行了分析。作者将实验上获得的屈服强度和抗拉强度归一化到[010]方向上,所得数据和原始数据相差较大,表明拉伸轴偏离[010]方向的角度是合金拉伸性能误差的重要来源。为了使误差<10%,需要将拉伸轴的偏离角度控制在8.8°以内。并且有必要进一步去寻找其它误差来源。
关键词 ：
欧拉角 欧拉角 拉伸性能 拉伸性能 镍基模型单晶高温合金 镍基模型单晶高温合金 EBSD EBSD
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| GB/T 7714 | 史超超 , 张晓娜 , 王崇愚 et al. 拉伸轴偏离角度对镍基模型单晶高温合金室温拉伸性能的误差影响分析 [J]. | 电子显微学报 , 2021 , 40 (05) : 505-509 . |
| MLA | 史超超 et al. "拉伸轴偏离角度对镍基模型单晶高温合金室温拉伸性能的误差影响分析" . | 电子显微学报 40 . 05 (2021) : 505-509 . |
| APA | 史超超 , 张晓娜 , 王崇愚 , 于涛 , 张跃飞 , 李晖 et al. 拉伸轴偏离角度对镍基模型单晶高温合金室温拉伸性能的误差影响分析 . | 电子显微学报 , 2021 , 40 (05) , 505-509 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
扫描电子显微镜(SEM)真空腔室内原位加热实验,当温度超过700℃以后,受到热电子的影响,导致扫描电子显微镜扫描成像质量下降,具体表现为产生条纹状的亮纹。针对这一问题,开展对扫描电子显微镜二次电子探测系统及二次电子成像的分析与研究,详细论述了高温下干扰扫描电子显微镜二次电子成像质量的影响因素,并设计出扫描电子显微镜的二次电子成像调节以及图像修复系统。该系统可分为热电子检测、扰动数据获取、图像修复等部分,采用电位检测并实时修改亮纹对应位置的亮度,可实现对被热电子干扰的图像进行主动的亮度补偿,从而实现图像修复的目的。实验结果表明,当样品温度达到1 000℃后扫描电镜仍能获得清晰的二次电子图像信息。
关键词 ：
扫描电镜 扫描电镜 二次电子 二次电子 热电子 热电子 图像修复 图像修复
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| GB/T 7714 | 唐亮 , 刘陵恩 , 徐晋勇 et al. 扫描电镜高温成像干扰分析及图像修复方法研究 [J]. | 电子显微学报 , 2021 , 40 (05) : 601-608 . |
| MLA | 唐亮 et al. "扫描电镜高温成像干扰分析及图像修复方法研究" . | 电子显微学报 40 . 05 (2021) : 601-608 . |
| APA | 唐亮 , 刘陵恩 , 徐晋勇 , 张宜旭 , 王永峰 , 张跃飞 et al. 扫描电镜高温成像干扰分析及图像修复方法研究 . | 电子显微学报 , 2021 , 40 (05) , 601-608 . |
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摘要 ：
Ti-6Al-4V合金表面超声振动滚压强化研究
关键词 ：
粗糙度参数 粗糙度参数 显微硬度 显微硬度 残余应力 残余应力 超声振动滚压 超声振动滚压 TI-6AL-4V TI-6AL-4V 微观结构 微观结构
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| GB/T 7714 | 席刚 , 刘元铭 , 张跃飞 et al. Ti-6Al-4V合金表面超声振动滚压强化研究 [J]. | 席刚 , 2021 , 29 (1) : 91-96 . |
| MLA | 席刚 et al. "Ti-6Al-4V合金表面超声振动滚压强化研究" . | 席刚 29 . 1 (2021) : 91-96 . |
| APA | 席刚 , 刘元铭 , 张跃飞 , 刘燕萍 , 材料科学与工艺 . Ti-6Al-4V合金表面超声振动滚压强化研究 . | 席刚 , 2021 , 29 (1) , 91-96 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
采用超声振动滚压加工技术对Ti-6Al-4V合金表面进行处理,探究该项技术对Ti-6Al-4V合金表面质量的影响。通过对该工艺加工前后的Ti-6Al-4V合金进行表面粗糙度参数、XRD图谱、截面微观形貌、表层残余应力及显微硬度的对比分析,结果表明:经该工艺处理后的合金表面各项粗糙度参数皆有明显降低;加工后的合金表面XRD图谱的衍射峰减弱且宽化,衍射角向高角度方向偏移;加工后的合金表层β相组织相较加工前明显细化,且随着深度增加β相组织逐渐增大;在距离表面约50μm位置的残余应力值最大可达到-967 MPa;加工后的合金表面显微硬度可达到421HV,且在0～140μm的深度范围内,显微硬度随着深度...
关键词 ：
粗糙度参数 粗糙度参数 显微硬度 显微硬度 超声振动滚压 超声振动滚压 微观结构 微观结构 残余应力 残余应力 Ti-6Al-4V Ti-6Al-4V
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| GB/T 7714 | 席刚 , 刘元铭 , 张跃飞 et al. Ti-6Al-4V合金表面超声振动滚压强化研究 [J]. | 材料科学与工艺 , 2021 , 29 (01) : 91-96 . |
| MLA | 席刚 et al. "Ti-6Al-4V合金表面超声振动滚压强化研究" . | 材料科学与工艺 29 . 01 (2021) : 91-96 . |
| APA | 席刚 , 刘元铭 , 张跃飞 , 刘燕萍 . Ti-6Al-4V合金表面超声振动滚压强化研究 . | 材料科学与工艺 , 2021 , 29 (01) , 91-96 . |
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